The student to faculty ratio is the number of students who attend a school divided by the number of teachers in the institution.
It is an important factor to evaluate colleges because the low student to faculty ratio tends to lead the smaller class sizes and giving more one-to-one learning Opportunities to students in classroom. Higher student to faculty ratio means that an instructor (professor) has more students to take care and the individual class size may be larger. In general, top ranked and well-known colleges have low level of students to faculty ratio and try to keep the ratio low.
Los Angeles County College of Nursing and Allied Health has the lowest number of students per faculty (3 to 1) and Gadsden Technical Institute has the second lowest number of students (3) based on academic year 2019-2020 college academci data.
Below table ranks and compares the Lowest Students to Faculty Ratio having lowest students to faculty ratio.

Lowest Students to Faculty Ratio Comparison Table

RankCollege NameIn-State Tuition & FeesOut-of-State Tuition & FeesStudent PopulationOnline Student PopulationGraduation RateNumber of Programs OfferedFinancial Aid AmountStudents to Faculty Ratio
1Los Angeles County College of Nursing and Allied Health
Los Angeles, CA
$5,050$5,050212--2$5,8023 to 1
2Gadsden Technical Institute
Quincy, FL
$2,628$2,62843-69%14$5,9553 to 1
3Suncoast Technical College
Sarasota, FL
$6,272$6,2871,102-38%42$2,3544 to 1
4Hillyard Technical Center
Saint Joseph, MO
$12,630$12,63090-81%17$7,8244 to 1
5Great Plains Technology Center
Lawton, OK
$3,415$3,790172-78%22$4,4614 to 1
6Withlacoochee Technical College
Inverness, FL
$3,233$3,27565-66%21$3,9795 to 1
7Nebraska Indian Community College
Macy, NE
$4,080$4,0802002625%9$3,5315 to 1
8River Valley Community College
Claremont, NH
$7,160$15,41079211332%32$3,5565 to 1
9Cankdeska Cikana Community College
Fort Totten, ND
$3,300$3,300178120%21$3,7515 to 1
10O C Collins Career Center
Chesapeake, OH
$10,500$10,500350-62%26$5,3845 to 1
Average$4,628$8,3255,614,242775,21634%-$4,24018 to 1